Improvement in chimney and ventilating flues



UNITED STATES PATENT CEFICE.

AMOS H. BOURNE, OF FORT SCOTT, KANSAS.

, IMPROVEMENT IN CHIMNEV AND VENTILATING FLUES.

Specitication forming part of Letters Patent No. 179,678, dated July 11, 1876; application tiled May 22, 1876.

To all whom it may concern:

Be it known that I, AMOS H. BOURNE, of Fort Scott, Bourbon county, Kansas, have invented a new and Improved Chimney and Ventilating Fine, of which the following is a specification My invention consists of a chimney and ventilatin g ue constructed ot'plastic material, the smokeiiue being, by preference, a clay pipe, which is placed in the center of the ventilator, which is a cement case surrounding the pipe, and having, say, four ventilatingipassages, between which it tits close to the pipe for supporting it, and at two opposite sides has ribs tting in grooves ot' the pipe to securev it in place substantially. The exterior case with passages is also for protecting the building from the heat ot the smoke-pipe.

The pipe is first made in any approved way, with the grooves in opposite sides, and is then set on end, say with four cores of iron or wood applied to the sides at proper distances apart, leaving the grooves exposed.

The cement case is then packed around it in a curb, confining it temporarily. The cores are then withdrawn, and when it sets the curb is removed, leaving the cement case united to the pipe by'ribs fitting in the grooves, and by contact otl other ribs against the. sides.

Stove-pipe and ventilating thiin bles will be fitted in, as required, when the cement case is built up.

The chimney and Ventilating flue will he built up in sections to any required height, and the top will be nished in any ornamental form.

Figure l is a sectional elevation of my improved chimney and ventilator, taken on line .fr no, Fig. 2; and Fig. 2 is a horizontal section taken on line y y', Fig. l.

Similar letters ot' reference indicate corresponding parts.

A is the smoke-pipe, which is to be made ot clay or cement of any approved kind, which can be molded in a plastic state, and will set hard in a short time, the said pipe being made with a groove, B, on opposite sides. O is the case, of cement or other material, built around the pipe on cores forming the Ventilating-titles D, and ribs E tting against the sides of the pipe, and on the grooves B. G is the stovepipe thimble, and H thimbles forming openings into the ventilating-passages. Besides being good ventilators, the grooves serve for cooling the aircurrents, keeping the pipe cool.

I am aware that a cement-pipe chimney is not new, but the heat and gases disintegrate the cement, so that it crumbles; also, that a clay-pipe chimney is not new, but rapid contraction and expansion crack it. Therefore neither is safe or durable; bntby making one protect the other I overcome these difficulties. Hence,

What I claim is p The combination, with clay pipe A, having grooves B, ofthe cement case G, built on cores that form tlues D, and provided with ribs E F, substantially as and for the purpose specitied.

AMOS H. BOURNE.

Witnesses:

JOHN H. BRYANT, 0. A. CHENEY. 

